Ventilator-control apparatus.



J. PRONOVOST & R. E. DUNCAN.

VBNTILATOR CONTROL APPARATUS.

APPLIGATION FILED APR.17. 1913. 1,073,285.

Patented Sept. 16, 1913.

2 SHEETSSHEET 1.

- INVE IV TORS WITNESSES Mm U my m MW M2.

COLUMBIA PLANOGRAPH C0,. WASHINGTON. n. c.

///1"// /l7/////////Aw AV/l/ll/l/ WITNESSES v J. PRONOVOST & R. E. DUNCAN.

VENTILATOR CONTROL APPARATUS. I

APPLICATION FILED APR.17, 1913.

Patented Sept. 16, 1913.

2 SHEETSSHBET 2.

CDL'UMBIA PLANDGR-APH C0, WASHINGTON, D. :4

INVENTOHS Jasqbkfmmms 55W JZ Z ZaEJZUZCQ/W .4 TTOBNEY JOSEPH PRONOVOST AND BOLLA DUNCAN, 0F HELENA, MONTANA.

' vnnrrLAron-ooivraor. APPARATUS.

Specification of Letters Patent.

Patented Sept. 16, 191".

,Applicationfiled April 17, 1913. Serial in. 761,797.

To (ZZZ whom, it may concern Be it known that we, Josnrrr Pnonovos'r and Roma E. DUNoAN, citizens of the United States, residing at Helena, in the county of Lewis and Clark and State of Montana, have invented certain new and useful Improvements in Ventilator-Control Apparatus; and

we do hereby declare the following to be a This invention relates to new and useful improvements in apparatus for controlling ventllators adapted for use 1n mllls, factories and rooms of various kinds and comprises a simple and efficient device of this nature so arranged that one or more of the ventilating doors may be operated singly or collectively as may be desired by suitable lever-operated mechanism.

The invention comprises various details of construction and combinations and arrangements of parts which will be hereinafter fully described, shown in the accompanying drawings and then specifically defined in the appended claims. I

We illustrate our invention inthe accompanying drawings, in which Figure 1 is side elevation showing a series of ventilating doors operated in accordance with our invention. Fig. 2 is a sectional view on line 22 of Fig. 1, looking in the direction of the arrow. Fig. 3 is a sectional view on line 3-3 of Fig. 1, looking in the direction of the arrow. Fig. 1 is a detailin elevation of a part of the invention. Fig. 5 is a detail perspective of a sliding collar with. integral lug projecting there from, and Fig. 6 is a detail view in elevation showing a slight modification of the invention.

Reference now being had to the details of the drawings by numeral, 1 designates doors which are hinged at 2 to the siding 3 and arranged in series. Fastened to each door is a bracket plate 4, each carrying a pivotal pin 5 upon which an arm 6 is pivoted which in turn is pivoted at its lower end to the pin 7 which is journaled in the bearing 8 projecting from the arm 9 which is integral with a sleeve 10 which is mounted loosely upon the horizontally disposed hollow shaft 11 which is journaled in suitable bearings upon the side of the room or wherever the ventilating apparatus is'to be located. Said shaft is adapted to have a rocking motion and operated through the medium of the lever 12, shown in Figs. 1 and 3 of the drawings, which lever has an integral collar 13 held by means of a set screw 1a in an adjusted position upon the shaft.

Fixed to the side of the room in which the ventilator apparatus is positioned are a se ries of hollow bracket members 15, fastened in the present instance intermediate the doors by means of the screws 16 and each of said members 15 is recessed at 17 for the reception of the arms 9. A coiled spring 18 is fastened at one end to the bracket member 15 and its other end isfastened to the arm 9, the purpose of which spring is to causethe shaft 11 to return to its normal position after having been rocked through the medium of the lever 12. Said shaft 11 is provided with a series of elongated slots 20, corresponding ends of which are widened as at 21. A collar, designated by numeral 22, is adapted to be inserted through the widened portion 21 of the slots 20 and the edges of the collar 22 are split as at 23, forming wings 2 1 which are" curved and extend in opposite directions, while portions of the edges form lugs '25 guided in the elongated portion of the slot 20 and adapted to engage slots 25* in the sleeves 10. The wings 2st engage over the opposite marginal edges of the slot and serve as means for guiding the shell as it is moved back and forth. Said shell carries a pin 26, shown clearly in Fig. 5 of the drawings, and to which a cable 27 is fastened, which latter is secured to a spring 28, and 29 is a cable which is fastened at one end to the spring 28 and its other end to an eye 80 which is fastened to a fixed object 31.. Said cable 27 passes about a pulley 32 and is fastened to the lever 34L- pivotally mounted upon the pin 35, said lever proj ecting through the slot 36 and which in its operative movements is adapted to swing from the position shown in solid lines in Fig. 3 to that in dotted lines, accordingly as it may be desired to cause the shell 22 to be thrown into or out of operative positions.

It will be noted that there are illustrated in the drawings three ventilators and three shells, similar to the shell 22, all having wings movable over the marginal edges of the slots in said shaft 11 and each provided doors. The other shells have respectively the lugs 37 and 38, and to the shell having the lugs 37 a cable 39 is fastened which passes over a pulley 40 and is pivotally connected to a lever 41. The shell having lugs 37 thereon has connected thereto a spring similarto the spring 28, not shown, and

which in turn is connected to a cable 46,

shown at the left in Fig. 1, and which is adapted to be fastened to a fixed object in a similar manner as shown in Fig. 4. While a cable 42 passes about the pulley 43 and is secured to thelever 45. The cable 42 is connected to the shell carrying the lugs 38 and which in turn is connected to a spring similar to the spring 28 and to which a cable '47 is fastened at one end and its other end to a fixed object. As these cables and springs are of identical construction and connection, illustration of one as in Fig. 4 is deemed essential to a correct understanding of the 3IE3S6I1t invention.

In Fig. 6 of the drawing, we have shown a slight modification of my invention, in which we have shown a sleeve which in the present instance serves as a reel and provided with a notch in its end which is loosely mounted upon the hollow shaft 56,

similar to the shaft 11 before described, and

upon which sleeve a rope 51 winds which in turn is fastened to an eye 62* upon the window sash 53 and the other end of the rope is fastened to an eye 54 upon the sash and passes about a pulley 55. Said shaft 56 is slotted for the reception of the laterally extending guide wings 57 upon the shell 58 which has lugs 59 projecting therefrom and adapted to engage a slot in the edge of the reel. The sleeve 58 is fastened to a cable 60 and a coiled spring 61 is fastened to a pin 62 upon the shell 58 and its other end fastened to a cable 63 which in turn is adapted to be connected to a fixed object, the same as shown in Fig. 4.

The operation of our invention will be readily understood and is as follows :-In the event of it being desired to open all of the ventilators simultaneously, the three levers to the extreme right, designated by numerals 34, 41 and 45 respectively, are all thrown down to position assumed by the lever in dotted lines in Fig. 3. This movement will cause the lugs 25, 37 and 88 re spectively to be thrown into the slotsin the springs which are connected each to a fixed object and its other end to the arm of a sleeve. Should it be desired to cause a single ventilator door to be opened while the others remain closed, it may be done by the manipulation of one orano-ther of the levers 84, 41 and 45, each of which regulates a shell carrying the lug adapted to engage a slot in one of the sleeves. When the levers 34 are at their upper limits, as shown. in

solid lines in Fig. 3, the cables,'which are fixed at one end and their other ends connected to the shells, hold the coiled springs under tension and, when one of the levers is thrown down, the tension of a spring connected therewith will throwlone of the lugs in the slot inan adjacent sleeve, causing the latter to rotate with the shaft. 8

By the provision of tin-apparatus nil-f under the control of an operator by the manipulation of the lever mechanism shown. 7

lVhat we claim to be'new is 1. A ventilating means for rooms of various kinds comprising movable ventilator doors, a rock shaft, sleeves loosely mounted upon the rock shaft, pivotal connections between each sleeve and door, and means carried by the shaft and adapted to engage'the sleeves to cause the same to rock with the shaft, as set forth. f

2. A ventilating means ous kinds comprising movable ventilator doors, a rock shaft, sleeves loosely mounted upon the rock shaft, pivotal connections between each sleeve and 7 door, and springpressed means carried by the shaft and adapted to engage thesleeves to cause the same to rock with the shaft, as set forth;

3. A ventilating means for rooms of various kinds comprising movable ventilator doors, a rock shaft, sleeves loosely mounted for rooms of variupon the rock shaft, pivotal connectionsbetween each sleeve and door, said sleeves being provided with notched ends, and springpressed means carried by the shaft and adapted to engage the notch in the sleeve,

as set fort-h.

4. A ventilating means for rooms of various kindsrcomprising movable ventilator ous kinds comprising movable ventilator doors, a rock shaft, sleeves loosely mounted upon the rock shaft, pivotal connections between each sleeve and door, said sleeves being provided with notched ends, and a movable, spring-actuated member mounted within the shaft and having a laterally projecting lug designed to engage a notch in the sleeve, as set forth.

6. A. ventilating means for rooms of various kinds comprising movable ventilator doors, a rock shaft, sleevesloosely mounted upon the rock shaft, pivotal connections between each sleeve and door, said sleeves being provided with notched ends, a movable, spring-actuated member mounted within the shaft and having a laterally projecting lug designed to engage a notch in the sleeve, a cable fastened to said member and a pivotal lever connected to said cable, as set forth.

7. A ventilating means for rooms of vari ous kinds comprising movable ventilator doors, a rock shaft, sleeves loosely mounted upon the rock shaft, pivotal connections between each sleeve and door, said sleeves be- 111g provided with notched ends, a member movable within the shaft and having wings 8. A ventilating means for rooms of various kinds comprising movable ventilator doors, a hollow rock shaft, a series of collars loosely mounted upon the rock shaft and each having a laterally projecting arm, coiled springs fastened one to each collar and its other end to a fixed object, each sleeve having a slotted end, pivotal link connection between each arm and ventilator door, a lever fixed to the rock shaft, the latter being slotted, a member movable within the rock shaft and having a lug projecting through the slot and adapted to engage the slotted end of a sleeve, a spring-actuated cable connected to said member, and a lever con nected to the cable, as set forth.

9. A ventilating means for rooms having openings therein, comprising closures for said openings, a slotted rock shaft, a sleeve loosely mounted thereon and having a notch in the edge thereof, connections between the sleeve and said closure, a shell mounted within the slotted portion of the shaft and having a projection designed for engagement with the notch in the sleeve, a spring connected at one end to said shell and to a cable at its other end, as set forth.

In testimony whereof we hereunto affix our signatures in presence of two witnesses.

JOSEPH PRONOVOST. ROLLA E. DUNCAN.

Witnesses:

SAMUEL S. BENNETT, PATRICK H. CAMPBELL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, I). G. 

